Results 111 to 120 of about 359,568 (270)

Geological processes shaping freshwater biodiversity: a synthesis of global evidence

open access: yesBiological Reviews, EarlyView.
ABSTRACT Recent genomic data highlight the key roles of geological processes in shaping the diversification and biogeography of freshwater lineages. Specifically, physical processes such as tectonic uplift, erosion, glaciation, lake formation, and sea‐level fluctuation contribute extensively to the evolution of biotic diversity within and among ...
Jonathan M. Waters   +3 more
wiley   +1 more source

Effect of feeding biochar, oat hulls, yeast fermentate, and organic acids on reduction of Campylobacter in free-range broilers from hatching to slaughter

open access: yesPoultry Science
The Campylobacter prevalence in free-ranging broiler flocks is usually higher than in conventional flocks, and effective interventions for this production type are needed.
Nao Takeuchi-Storm   +6 more
doaj   +1 more source

Water storage in an era of climate change: addressing the challenge of increasing rainfall variability. Blue paper [PDF]

open access: yes
Water storage / Climate change / Rain / Dams ...
McCartney, Matthew, Smakhtin, Vladimir
core  

The influence of rivers on seabird foraging ecology

open access: yesBiological Reviews, EarlyView.
ABSTRACT Rivers act as vital arteries to the world's oceans, delivering fresh water and nutrients that sustain marine ecosystems. Globally, river flow increasingly is being altered by climate change and anthropogenic pressures; yet the significance of rivers to predatory marine species, such as seabirds, and the extent to which river‐related changes ...
Julia B. Morais   +2 more
wiley   +1 more source

Balancing irrigation and hydropower: Case study from Southern Sri Lanka [PDF]

open access: yes
Reservoirs / Dams / Hydroelectric schemes / Economic analysis / Canals / Irrigation scheduling / Cropping systems / Case ...
Ariyaratne, Ranjith   +3 more
core  

Extent, characteristics and policy applications of Key Biodiversity Areas

open access: yesBiological Reviews, EarlyView.
ABSTRACT A global standard for the identification of Key Biodiversity Areas (KBAs) was published 10 years ago to provide a unified set of criteria for identifying ‘sites of significance for the global persistence of biodiversity’. We review the initiative's origins, the KBA identification process, characteristics of the current network, threats, policy
Stuart H. M. Butchart   +57 more
wiley   +1 more source

Using a Curved Bed Sill as a Scour Countermeasure around a Complex Bridge Pier

open access: yesTikrit Journal of Engineering Sciences
Bridges are constructed to facilitate transport between riverbanks. These bridges are supported by piers of varying geometric shapes that differ from one bridge to another.
Israa H. S. Al-Rahoo, Nashwan K. Alomari
doaj   +1 more source

Classifying avian drinking behaviour: ecological insights and implications in a changing world

open access: yesBiological Reviews, EarlyView.
ABSTRACT Water is a fundamental currency of life, and its availability significantly influences animal behaviour, physiology and distributions. However, our knowledge around the dependence on water for drinking and the direct and indirect mechanisms driving related behaviours remains partial in the context of changing climates. Here, we review patterns
Shannon R. Conradie, Marc T. Freeman
wiley   +1 more source

Small-scale irrigation dams, agricultural production, and health - theory and evidence from Ethiopia [PDF]

open access: yes
The author looks at the feasibility and potential of instituting small-scale irrigation dams to reduce Ethiopia’s dependence on rainfed agriculture and the associated food insecurity. He develops a theoretical framework to assess the welfare implications
Ersado, Lire
core  

The ageing holobiont: crosstalk between telomere dynamics, oxidative stress and the gut microbiome

open access: yesBiological Reviews, EarlyView.
ABSTRACT The gut tissue is at the frontline of early onset of ageing. It exhibits high cell turnover rates and rapid telomere shortening, which can have systemic effects on the developing or senescing organism. We conducted a literature review of studies on the crosstalk between telomere length dynamics, telomerase activity, oxidative stress, and gut ...
Michael L. Pepke   +2 more
wiley   +1 more source

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